I have jumped both suits extensively and just can't decide which one to order. In the beginning I didn't care about the grippers, but I am slowly starting to like them. I want to use the suit mostly for acro and some flocking. I usually jump a Havok.

The main difference is subtle variations in steering. If acrobatics are part of what you like doing, the Shadow seems like the most logical choice. Also being that its more in line with the Havok you already jump.

I own both types of suits, but I generally fly my "grippered" suits. I don't have any problem taking grips with the phantom and I personally like backflying better with grippers. Again, personal preference.